How To Manage Bottomnavigation From Fragment?

I'm trying to set navController to bottomNavigation, but it's requires activity, the problem is my borromNavigation hosted in fragment, so i don't have activity instance. I've trie

Solution 1:

In HomeFragment to set navController on BottomNavigationView:

import androidx.navigation.findNavController

Navigation.setViewNavController(bottom_nav_view, activity!!.findNavController(R.id.my_nav_host_fragment))

then when u want get navController from bottom_nav_view:

bottom_nav_view.findNavController()

Solution 2:

As said Artur Gniewowski, in HomeFragment in onActivityCreated I need just add

bottom_nav_view.setupWithNavController(activity!!.findNavController(R.id.my_nav_host_fragment))

So, now in HomeFragment i have:

package andy.schedulekpi.ui.fragments.home

import androidx.lifecycle.ViewModelProviders
import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Toast
import androidx.navigation.Navigation
import androidx.navigation.findNavController
import androidx.navigation.fragment.navArgs
import androidx.navigation.ui.setupWithNavController

import andy.schedulekpi.R
import kotlinx.android.synthetic.main.home_fragment.*

import kotlinx.android.synthetic.main.home_fragment.view.*

classHomeFragment : Fragment() {

    companionobject {
        funnewInstance() = HomeFragment()
    }

    privatelateinitvar viewModel: HomeViewModel


    val safeArgs : HomeFragmentArgs by navArgs()

    overridefunonCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        val view =  inflater.inflate(R.layout.home_fragment, container, false)


        return view
    }

    overridefunonActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)
        viewModel = ViewModelProviders.of(this).get(HomeViewModel::class.java)
        // TODO: Use the ViewModel//Navigation.setViewNavController(bottom_nav_view, activity!!.findNavController(R.id.my_nav_host_fragment))
        bottom_nav_view.setupWithNavController(activity!!.findNavController(R.id.my_nav_host_fragment))

        Toast.makeText(this.context, safeArgs.currentWeek.toString(), Toast.LENGTH_SHORT).show()
    }

}

Thanks to Artur Gniewowski.